Ingot-stripper



T. W. PRICE.-

INGOT STRIPPER.

APPLICATION FILED NOV. 5. 1918.

3 SHEETS-SHEET l.

Patented Sept. 7, 1920.

I m vwewto z T. W. PRICE.

IN'GOT STRIPPER.

- APPLICATION FILED NOV. 5, 1918.

Patented Sept; 7, 1920.

3 SHEETSSHEET 2- II I C..

T. W. PRICE.

INGOT STRIPPER- APPLICATION FILED NOV- 5, 191a.

Patented Sept. 7. 1920.

3 SHEETS SHEET 3- UNITED STATES PATENT OFFICE.

THORNTON w. PRICE, on NEW YORK, N. Y.

INGOT-STRIPPER.

Application filed November T0 aZZ whom it may concern Be it known that I, THORNTON W. PRICE, residing at New York, in the county and State of New York, have invented certain Strippers, of which the following is a specification.

This invention relates to an ingot stripper.

Theobject of the invention is to provide a simple, practical, and thoroughly efficient device by the use of which molds may be readily stripped from the hard metal therein.

A "further object is to provide a stripper which may be conveniently moved from place to place,'and particularly along a row o i molds, stripping the molds one aiter the other along the row.

A further object is to so arrange the parts of the device that all of the necessary Operations thereof may be performedby a single workingman.

A further object is to provide means whereby the single required worlringman, or operator, may be s'u ported upon the carriage, and to provide, within his easy and 7 new and useful Improvements in Ingotconvenient reach, all of the necessary han dles, levers, etc, torperforming each of the diil'erent functional operations of the device.

A further and more detailed object is to provide the device with hydraulic means by which to eiiect the stripping operation.

ii. further-object is to so design the parts that the strains incident to the stripping operation are borne by the immediate stripper parts rather than bythe supporting frame or carriage. Y

A further detailed object is to provide. suitable levers, handles, etc, for controlling the hydraulic parts, all of said levers and handlesbeing within convenient reach of a single operator, and further to provide drive means also within convenient reach of the same operator,by which he may cause movement of the stripper from place to place.

A further object is to provide acarriage upon which the stripper parts proper are carried, which is of a shape to straddle a row of molds, and which is adapted to support the stripper parts proper in a position above the row of molds, together with means for conveniently moving the carriage and Specification of Letters Patent.

Patented Sept. '7, 1920.

5, 1918. Serial N0. 261,256.

stripper parts from mold to mold along the row.

A further object is to provide means whereby the stripper parts proper may be caused to move vertically with respect to the carriage so as to properly cooperate with molds of different heights.

Other objects and aims of the invention, more or less specific than those referred to above, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts, and applications of principles, constituting the invention; and the scope of protection contemplated will be indicated in the appended claims.

In the accompanying drawings which are to be taken as a part of this specification, and in which I have shown merely a pie fer-red form of embodiment of the inventionz- Figure l is a side elevational view of a device constructed in accordance with this invention.

Fig. 2 is a front elevational view of the structure shown in F ig. 1, parts being shown in vertical section for better disclosing the operation of the device.

Fig. 3 is a top plan view of the structure shown in Fig. 1, and

Fig. 4 is a diagrammatic view illustrating the use of this stripper in connection with molds which are larger at the top than at the bottom.

Referring to the drawings for describing in detail the structure which is illustrated therein, the reference character L indicates generally the stripper parts proper, which, for convenience, may be here referred to simply as the stripper.- The reference character G indicates the carriage, while the reference character H indicates a hydraulic pump.

The-carriage G is made up of a pair of side members, or legs, 1, spaced apart and connected together by a pair of cross members 2. The cross members arethemselvcs spaced apart, and the stripper ported between them substantially midway between the side members 1.

' Each of the side members consists of a L is suppair of channel beams 3 arranged horizonis received the two ends of a frame member.

5. The frame member 5 may be made of any suitable material, but pre erably is of channel cross section and is bent so that its intermediate portion, as26, is somewhat elevated above the channel-beams 3. e

The cross members 2 are also preferably of channel cross section, and are fixed with their oppositeends resting upon the upper surface of the portionsG of the side members, suitable end reinforcing tie plates, as 7, serving to lend rigidity to the. structure. The opposite end portions ofthe frame member 5, as at 8, depend into position between the channel-beams 3 andare fixed by suitable rivets, or the like, corner brace plates, as 9, being employed between the channel beams 3 andgthe member 5 for reinforcing the structure.

A pair of centralbraces, as 10, are also provided. These are spaced apart and have their lower ends fixed between the channel beams 3, while their upper ends are fixed to the under surface of the portions 6 of the member 5. i r

A platform 11 is fixed to the channel beams 3 of one of the side members, and projectstherefrom in a position to support the-necessary operator. Thisplatform also serves to support a tank 12 upon the upper surface of which is mounted the pump H.

As an expedient for moving the carriage from place to place, a simple hand operated chain drive device is provided. This includes the hand wheel 13 fixed to a shaft 14 which extends from one of the side members 1 to the other, being supported in suitable bearings 15 fixed directly to the adjacent cross member 2. The shaft 14 car lies a pair of small; sprockets 16, one adjacent each of its opposite, ends, and these are. connected, by suitable chains 17, with larger sprockets 18 connected with the two front wheels 4. V

The frame members 5 are formed with openings 19 therethrough through which the chains 1'7 pass.

It is desirable that the wheels 4 be mounted upon tracks 20, so that the device may be more easily moved and will better follow a fixed path.

A series of molds, as, 21,..to .be stripped, are arranged in a row between the tracks.

The stripper L consists of a main cylinder 22 and a pair of supporting cylinders 23. The main cylinder carries a plunger 24% having a head .25 vertically movable therein. Fixed rigidto the walls of the cylinder 22 are a pair of depending arms 26 and to the lower vends of these is fixed a pair of grippers 27. The grippers 27 have inturned shoulder parts 28 adapted to engage beneath relative over-hanging shoulder parts 29 of the molds, while the lower end of the plunger 24: is adapted to engage the upper surface of the solid metal from which it is desired to strip the mold.

From the upper and lower portions of the cylinder 22 respectively, extend a pair of pipes 30 and 31. These pipes are fitted with valves 32 and 33, respectively, and beyond said valves a common pipe, as 3-1, extends to one side of the pump H.

The pump includes a manually operable handle 35 by means of which water from the tank 12 may be lifted through a pipe 36 and forced outwardly through the pipe 34: to either the upper or lower portion of the cylinder 32 according to which of the valves 32 or 33 is open.

It follows, therefore, that if water he forced into the upper portion of the'cylinder 22 while the grippers 27 are engaged beneath the shoulders 29 of a mold, the plunger 2 will move downwardly until it engages the upper surface of the metal within the mold. Then, if water continues to be forced into the upper portion of the cylinder, the cylinder itself will be forced upwardly. This will produce a corresponding lifting movement of the grippers while the plunger stands at rest. In this way the mold will be loosened from the metal.

In order to accommodatethe bodily upward movement ofthe cylinder, the cylinder is mounted to slide vertically. between the cross members 2 and between a pair of castings 37 which are placed betweenthe cross mem *ers 2, one at each side of the cylinder. These castings also serve to carry the cylinders Plungers 38, within said'cylinders'23, project upwardly into connection with the cylinder 22 at opposite sides of said cylinder 22, as at 39. i V

The cylinders 23 are rigidly connected with the cross members 2 and the plungers 38 slide freely therein as the cylinder 22 moves upwardly or downwardly.

The cylinders 23, with their plungors, therefore, serve as guide means for the cy inder 22. I 7

Since it is desirable thatthe cylinders 23, with their plungers, may be utilized also for altering the'elevationof the grippers, so that the grippers may be brought into proper cooperative relation with molds of different heights, the, lower portions of the cylinders 23 are connected with a common pipe, as 4:0, which is provided with controlling valve 41 and which is connected, beyond said valve 41, with the pipe 3.4L By opening the valve' l wfater may be forced into the bottom portions of the cylinders 2 to cause the pistons 38 to move upwardly for elevating the cylinder 22 and the grippers. changing'fthe position of the valve {l1 the water pressure may be relieved and the weight of the pistons 38 and the parts carried thereby will cause the pistons and said parts to move downwardly.

Suitable return pipes, as 42, communicate with each of the valves 32 and 88 and ll, and lead into the tank 12 for returning water into the tank.

The pipes 30 and 81 are preferably flexible so as to permit ofthe free movement of the cylinder 22. a

In the practical use of this device, the operator standing upon the platform 11, has entire control of all of the valves and of the pump handle 35 as well as of the drive wheel 13. By operation of the drive wheel 13 he moves the carriage into position with the plunger 2% central over a mold. He then operates the valve 41 and the handle 35 to bring the grippers substantially into engagement with the shoulders 29 ofthe mold.

his being accomplished, he then manipulates the valve 32 to bring the plunger 24 downwardly against the metal and to lift the cylinder 22 and the grippers for stripping the mold from the metal in the manner described. He then manipulates the valves to release the mold, and by the hand wheel 13 moves on to the next mold.

The molds thus stripped, being loosened from the metal, may subsequently be readily lifted off. a

The operation, as thus described, obtains where the mold. is smaller at the topthan at the bottom. Where the mold is of a shape smaller at the bottom than at the top, as indicated in Fig. l, the operation is slightly different. In this instance, the shoulders, as 43, formed at the lower ends of the arms 26 are brought into engagement with the upper surface of the mold, and a hook a l, connected at the lower end of the plunger 2a, is engaged into an eye'4l5 which has been cast into the metal within themold.

By proper manipulation of the valves, the hook 445 is drawn upwardly'while the mold is held down.

During this operation the water beneath the plunger head 25 is counter-balanced by the resultant pressure against the bottom wall of the cylinder 22. Since the arms 26 and the shoulders 43 are fixed to the cylinder it follows, therefore, that the only strains presentare localized between the cylinder and the plunger nead and none is transmitted to the carriage, just as is also true during the operation of stripping mold, as in Fig. 2. hen operating, as in Fig. 2, the water pressure is between the upper surface of the plunger head and the under surface of the top wall of the cylinder, pressing down on the plunger and up on the top wall.

The cylinders 23 are at no time subjected to any of the stripping strains. The cylinders 23, with their pistons, serve merely to pressure of elevation for guide the larger cylinder 22 and to bring the parts carried by the cylinder 22 into proper operating upon the molds.

The carriage, therefore, not being called upon to withstand any of the stripping strains, may, of course, be built of a strength only sufficient to properly support the actual weight of the stripper.

As many changes could be made in this construction without departing from the scope of the invention as defined in the following claims, it is intended that all matter contained in the above description, or shown in the accompanying drawings, shall be interpreted as illustrative only and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A device of the class described comprising a stripper and a carriage therefor, the stripper including hydraulically operable parts, and means carried by the carriage to control said parts.

2. A device of the class described comprisin a stripper and a carriage therefor, the stripper including a cylinder, at plunger movable within the cylinder, means carried by the cylinder for engaging the mold, means whereby the cylinder is movably supported upon the carriage, and means whereby to effect movement of the plunger and cylinder in opposite directions relative to each other for the purpose described.

3. A device of the class described comprising a stripper and a carriage therefor, the stripper including parts adapted to engage the mold and the ingot and being movable in opposite directions for stripping the mold from the ingot, and hydraulically operable means engaging between the carriage and said parts operable to adjust said parts relative to the carriage.

4a. A device of the class described comprising a stripper and a carriage therefor, the stripper including parts adapted to engage the mold and the ingot and being movable in opposite directions for stripping the mold from the ingot, hydraulically operable means for adjusting said parts relative to the carriage including a cylinder carried by the carriage, a plunger connected with said parts and movable within said cylinder, and means operable to cause movement of said plunger within said cylinder.

5. A device of the class described comprising a stripper and a carriage therefor, the carriage including a pair of cross members spaced apart, the stripper including a cylinder movably positioned between said cross members, guide means for said cylinder carried by said cross members, means carried by said cylinder adapted to engage the mold, a plunger movably mounted within said cylinder having a part projecting therefrom for engaging the ingot, and means operable to effect movement of the cylinder relati e to the plunger. v

6. A device ofthe class described comprising a stripper and a carriage therefor, the carriage including a pair of cross members spaced apart, the stripper including a cylinder movably positioned-between said cross members, guide means for said cylinder carried by said cross members, means carried by said cylinder adapted to engage the mold, a plunger movably mounted within said cylinder having a part projecting therefrom for engaging the ingot, means operable to effect movement of the cylinder relative to the plunger, and said guide meansbeing of a character whereby to effect adjustment of said cylinder and plunger relative to said cross members. i

7. A. device of the class described comprising a stripper and a carriage therefor,inanually opcrablemeans to operate the stripper, manually operable means to move the carriage, and each of said manually operable means having. an operating handle, said operating handles eachother adapted for operation by a single operator. 7 a

8. A device of the class described comprising astrippcrand a carriage therefor, manu ally operable means to operate the stripper,

manually operable means to move the carriage, each of said manually operable means havin an o )eatin handle said 0 )eratin b ,(3 7 '7 handles being positioned adjacent each other adapted for operrtion by a single operator,

and a platformformed upon the carriage adjacent said operatinghandles adapted to support an operator in a position to operate said. handles.

9. A device of the class described comprising a stripper and a carriage therefonthe stripper including hydraulically operable parts movable in opposite directions relative to each other one for engaging theingot andthe otherfor engaging the mold, and supporting means for supporting said vhydraulically operable parts from the carr1age of a characterwhereby to ZL(l]1lSl1 said hydraulically operableparts relative to the carriage. r I

10. A levice of the class described-comarisin av stri veer and a carria e therefor a, L. a a

the carriage compr sing a pair of standards being positioned adjacent spaced apart,,a cross member extending between said standards and connecting said standards together to complete aninverted U-shaped frame, rollers mounted upon said standards by which the carriage may be moved from place to place, and the stripper being carried by said cross member and depending therefrom into thespace between said standards. v

11. A device of the class described comprising a stripper and a carriage therefor, the carriage comprisin a pair of standards spaced apart, a cross member extending between said standards and connecting said standards together to complete an inverted U-shapedframe, rollers mounted upon said standards by which the carriage may be moved from place to place, the stripper being carried by said cross member and depending th'erefrom into the space between said standards, a platform carried by one of said standarrs upon which an operator may be supported, and means forming a part of and movable with the device and being adjacent to said platform adapted for manual operation to control said stripper.

12. A device of the class described comprising stripper and a carriage therefor, the carriage comprising a pair of standards spaced apart, a cross member extending between said standards and connecting said standards together to complete an inverted lfisshaped frame, rollers mounted uponsaid standards by which the carriage may moved from place to place, the stripper bclag carried by said cross member and depending therefrom into the space between said standards, a platform carried by one of said standards upon which an operator may be supported, means forming a part of and movable with the device and being adjacent to said platform adapted for manual operation to control said stripper, and other means also forming a part of and movable with the device and being adjacent to said platform adapted for manual operation to control- 

